Carpet-sweeper.



PATBNTED JAN. 2s, 1908'. F. C. MASON & J. W. SHANAHAN. CARPET SWEBPER.

APPLICATION FILED FEB. 19, 1907.

Cil

UNITED STATES PATENT FRANCIS C. MASON AND JOHNW. SANAHAN, OF GRAND RAPIDS, MICHIGAN, ASSIGNORS TO BISSELL CARPET SWEEPER COMPANY, OF GRAND RAPIDS, MICHlGAN; A CORPORATION OF MICHIGAN.

-vCARPET-SWEEPER.

Speciicationof Letters Patent.

Fatented Janf, i998.

Application filed February 19.1907. Serial No. 368.313.

To all whom it may concern:

Be it-knownthat we,`FRANors C. MAsoN and JOHNl W. SHANAHAN, lcitizens of the United States of America, residing at Grand Rapids,'in the county-'fof Kent and Stateof Michigan, have invented certain new and useful Improvements in Carpet 1. Sweepers and we do hereby declare the following to bea full, clear, and exact description of the invention, such as will' enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in carpet sweepers, and more particularly to the mounting of the supporting and driving wheels thereon. v

The object of our inventionis to provide improved means whereby the said wheels are properly engaged with the Ibrush shaft pulleys and frictional contact therewith -ncreased by downward pressure u on the de-A vice; the said wheels providedwit improved journal bearingsyim roved means rovided' for supportin the w eels in vertica planes, and to provi e the device with various new and useful features hereinafter more fully A described and particularly pointed outin the claims, reference'being had to the accompanying drawings, in which; K.

Figure 1. is an end elevation of a carpet sweeper embodying our invention, with parts` omitted; Fi 2. a plan view of the same;

Fig. 3. an en arged sectional detail onthe line 3 the line 4--4 of Figs. 1 and 2. E

Like numbers refer to .like parts in all of Y vthe figures. A

1 represents the case; 2, the end guards oi the same 5 3 the brush pulleys; 4=,thesup` porting and driving'wheels. alll arranged as usually constructed. These vwheels vare provided with tubular hubs closed at the outer end, in which hubs are inserted the connecting rods 15, which rods normally rotate with the wheelsvwhi'ch they connect, exce t in case the device is moved in a curved pat ,whereby the wheels at one end are required to move more rapidly than those at the other end, in which event the rod will slip or rotate in one or the other 'of ,the hubs to accommodate this i movement. This rod maintains the wheels thereon in parallel planes, and the hubs 5 are j ournaled to rotate within bearings supporting the case.- An externally 'grooved 3 of Fig. 1. Fig. 4. a vertical sectidn on Ynonneotin'gfthe wheels in collar 6 is fixed on each hub, and traversing this groove are a series of balls 16 inclosed in a'fcase 7, consisting of two substantially equal stampedsheet meta-loups secured to leachother by-folding the edge of one cup overtheedge .of the other.' These cups 7 are provided witharms 8 extending diagonally youtward and upward' at substantiallyY 45 degrecs from the vertical or horizontal. These arms .at their outer ends vare pivoted on springsupports 9 preferably consisting of a s ring wire pivoted at its respective ends to tlie respective arms, and attached to the case at the middle, 'for which purpose, the middle portion thereof is bent inward in a loon as at 9? and extends through the front ci the bail support 18 and across the baseplate it) thereof,v on which plate .is a clip'il engaging the middle portion of the' wire, whereby y the -spring support is securely held in place and furnishes verticallyv and outwardly yieldable pivotal supports for the arms8. Any down ward pressure exerted upon the case will tend to swing these arms inward toward the ybrush pulleys as well as upward and thus whenever thc case is pressed downward tc increase the contact of the brush with the carpet, creased frictionalcontact between the driving wheels and the brush pulleys is simul taneously secured. As the bearings of the Wheels swing inward, the ends of the spring supports 9 move outward as well' upward, whereby the arms become more nearly hori iontal and are wedged between their pivots and the brush pulleys.

What we claim is:

'1. In a carpet sweeper, in ccmliination with the case and brush shaft, wheels having tubular hubs eloscdat the outer ends, rods inserted in the hubs and connecting the wheels in op osing pairs, said rods normally rotative witi the connected wheels but rotative therein, `bearings in which the hubs are journaled, arms extending outward and 'upward from the bearings, and spring suports on which the arms are pivoted to move inward and upward.

2. In a carpet sweeper, in combination with the case and brush shaft, su porting wheels having tubular hubs close at the outer ends,'.rods inserted in said huhs and airs, said rods beingsnormallyrotative wit i the connected whee and rotative therein when the wheels rota-to unoquay, bomiggs in Which the hubs' .r doumaod., mms, o the bearings, bail penned u@ rom the oase and plata: Spring supports pivoted 5 at th outer ends to bhe arms of the bearings md 'Secured to @he plates at the middle.-

f "i n gra/ rpm sweep@ the combination of .a Caso, o bail Support spaced. a mrt from the caso; a swing suppo't having a u posed oop @monding throu yh in. @he be@ Suopol't, a clip on tie @ha loop, and meansl mg Wheels with' 1g suppo1t. I l oir, oase, a bed pltea o caso and 1'ojeobng horizon@ n, a. opi-n@ support havin@ a vj dioposod loop at the midle, h@ ioop to the bod plate,

- :und h? fing horiyontal ed pate affl bearings attached to the fee @ms of da port and Who-13 joumaed. ita the boa-finos.

5. In a cvape sweo )er the oombm m of a caso, si, pail of who@ 3,'oah whoo hav/'ing a tubular hub,v a rod havin im respective mm inserted in said hubs all being; 'wholly ported by the Whoes,ss1d rod. boing' non molly ot'ativo with the wheos and' ac" v to sli or rotate in 'one of said hubs who Whee s rotate una molly, bom-.in the hubs of the w @eis me jomna means extending ousdo' of the wheels foi' conneoing h@ bearings to '153C' oa In testimony whereof We afi M om signatures in presen@ of two Witnesses.. v v

' FRANCIS C. MASCCEI Wt; asses LUTHER- V. Mom-EON,

GEoRGANA. CHAGE. 

